I see a parallel between the lack of confidence in singing and the world of visual images in tabloid and fashion magazines. Photoshopped images create unrealistic body expectations. In the modern era of music autotuned recordings give us unrealistically perfect sounds.
The end goal of both processes is the same: the appearance of perfection. Whether we are trying to look as perfect as a picture we've seen or sound as perfect as a recording we've heard, we are destined to fail.
All of this has led to a crisis of confidence. Autotuned recordings have robbed average singers of confidence in the quality of their voices.
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